![]() ![]() Use async API style because browser crypto API is async.Returns a Promise will resolved to a time based one time password opt This should be stored by the application, must be user specific, and be incremented for each request. One Time Password manager is fully compliant with HOTP (counter based one time passwords) and TOTP (time based one time passwords). Returns a Promise will resolved to a counter based one time password optĬounter value. ![]() This must be the same for every request and is used to calculate C. if window = 5 and counter = 1000 all tokens between 9 will be checked against the supplied token The function will check window codes in the future against the provided token. delta is the count skew between client and server. I have an API that needs to register once with a HOTP/TOTP code before it is given a longer term session token. Returns a Promise will resolved to an object if the token is valid. Returns a Promise will resolved to null if token is not valid for given key and options. Note: If your label has spaces or other invalid uri characters you will need to encode it accordingly using encodeURIComponent More details about the uri key format can be found on the google auth wiki API hotp.verify(token, key, opt)Ĭheck a counter based one time password for validity. ![]() replace ( /= /g, '' ) // to create a URI for a qr code (change totp to hotp if using hotp) var uri = 'otpauth://totp/somelabel?secret=' + encodedForGoogle encode ( key ) // Google authenticator doesn't like equal signs var encodedForGoogle = encoded. Var base32 = require ( 'thirty-two' ) var key = 'secret key for the user' // encoded will be the secret key, base32 encoded var encoded = base32. ![]()
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